Heterocyclic phosphorus compounds



United States Patent 2,834,798 HETEROCYCLIC PHOSPHORUS COMPOUNDS Ingenuin Hechenbleikner, Clarksburg, Carl William Pause, Adams, and Francis C.

assignors to Shea Chemical Corporation, Jeffersonville, Ind., and Columbia, Tennesee No Drawing. Application December 20, 1957 Serial No. 704,004 25 Claims. (Cl. 260-461) The present application is a continuation-in-part of application Serial No. 555,762, filed December 28, 1955; application Serial No. 631,046, filed December 28, 1956, and application Serial No. 635,148, filed January 22, 1957, the entire disclosures of which are hereby incorporated by reference.

This invention relates to the production of new organic derivatives of phosphorus and more particularly to the production of new cyclic derivatives of trivalent phosphorus.

It is an object of the present invention to provide stable, high-boiling, non-discoloring cyclic organic derivatives'of trivalent phosphorus.

It is a further object of this invention to produce cyclic derivatives of trivalent phosphorus which possess good stabilizing action for resins.

Another object is the preparation of cyclic derivatives of trivalent phosphorus which are good antioxidants.

An additional object is to prepare a cyclic organic phosphite which is useful as an intermediate in the preparation of bromethylphenyl alkanephosphonates.

Still further objects and the entire scope of applicability of the present invention will become apparent from the detailed description given hereinafter; it should be understood, however, that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.

The objects are accomplished by the preparation of cyclic organic phosphites having the formula:

where R R R R R and R are the same or different and are hydrogen or lower alkyl group and R is hydrogen, halogen, nitro, lower alkyl, cyclohexyl, nitro, alkoxy, naphthoxy and phenoxy. Generally no more than two halogen atoms or one nitro group is present on the aromatic ring as an R substituent.

The compounds thus contain the 1,3,2-dioxaphospholane ring which has the following numbering system:

Lanoue, North Adams,-

Tenn., a corporation of 2,834,798 Patented May 13, 1958 or the 1,3,2-dioxaphosphorinane ring which has the fol lowing numbering system:

The preferred compound is hexylene phosphite (2- phenoxy-4,4,6-trimethyl-13,2-dioxaphosphorinane) which is of especial value as a gasoline additive. Ethylenephenyl phosphite (Z-phenoxy-l,3,2-dioxaphospholane) also is one of the most valuable compounds'of the instant invention although, as previously stated, hexylene phosphite is preferred.

Typical examples of dioxaphospholane compounds within the instant invention are ethylenephenyl phosphite; ethylene-Z-chlorophenyl phosphite; ethylene-S-chlorophenyl phosphite; ethylene-4-chlorophenyl phosphite; ethylene-2,3-dichlorophenyl phosphite; ethylene-2,4-dichlorophenyl phosphite; ethylene-2,5-dichldrophenyl phosphite; ethylene-2,6-dichlorophenyl phosphite; ethylene- 3,4-dichlorophenyl phosphite; ethylene-3,5-dichlorophenyl phosphite; ethylene-Z-bromophenyl phosphite; ethylene-3- bromophenyl phosphite; ethylene-4bromophenyl phosphite; ethylene-Z-iodophenyl phosphite; and the corresponding 3- and 4-monoiodophenyl phosphites; ethylene-2- fiuorophenyl phosphite (and the corresponding 3- and 4- monofiuorophenyl phosphites), ethylene-2-chloro 4- bromophenyl phosphite; ethyIene-Z-methylphenyl phosphite; ethylene-3-methylphenyl phosphite; ethylene-4- methylphenyl phosphite; ethylene-3,5-dimethylphenyl phosphite, ethylene-Z-ethylphenyl phosphite; ethylene-4- ethylphenyl phosphite; ethylene-2-hexyphenyl phosphite; ethylene-2-cyplohexylphenyl phospite; ethylene-4-octylphenyl phosphite; ethylene-3-isobutylphenyl phosphite; ethylene-Z-dodecylphenyl phosphite; ethylene-Z-methoxyphenyl phosphite; ethylene-3-methoxyphenyl phosphite; ethylene-4-methoxyphenyl phosphite; et'hyIene-Z-ethoxyphenyl phosphite; ethylene-Z-octoxyphenyl phosphite; ethylene-2-amylphenyl phosphite; ethylene-2-butylphenyl phosphite; ethylene-2-tertiary-butylphenyl phosphite; ethylene-2-secondary-butylphenyl phosphite; ethylene-2- phenoxy-phenyl phosphite; ethylene-2-alpha-naphthoxyphenyl phosphite; ethylene-Z-beta-naphthoxyphenyl phosphite; ethylene-2-phenylphenyl phosphite; ethylene-alphanaphthyl phosphite; ethylene-Z-nitrophenyl phosphite; ethylene-3-nitrophenyl phosphite; ethylene-4-nitrophenyl phosphite; l-methylethylenephenyl phosphite; ,l-methylethylene-Z-chlorophenyl phosphite; 1,2-dimethylethylenephenyl phosphite; 1,2-dimethylethylene-3-chlorophenyl phosphite; l-ethylethylenephenyl phosphite; 1,1,2,2-tetra methylethylenephenyl phosphite and l-propylethylenephenyl phosphite.

Typical examples of dioxaphosphorinane compounds included within the instant invention are 2-phenoxy-l,3,2- dioxaphosphorinane; 2-phenoxy-4-methyl-l,3,2-dioxaphosphorinane; 2-phenoxy-5,5-dirnethyl-1,3,2-dioxaphosphorinane; 2-phenoxy 4,4,6 trimethyl-l,3,2-dioxaphosphorinane; 2 phenoxy-4-propyl-5-cthyl-1,3,2-dioxaphosphori- 3 phorinane; 2-(2,6-diehloro)phenoxy-4,4,6-trimethyl-1,3,2- dioxaphosphorinane; 2-(3,4 dichloro)phenoxy-4,4,6-tri methyl-l,3,2-dioxaphosphorinane; 2-(3,5 dichloro)phenoxy-4,4,6-trimethyl 1,3,2 dioxaphosphorinane; 2-(2- bromo)phenoxy 4,4,6 trimethyl-l,3,2-dioxaphosphorinane; 2-(3-bromo)phenoxy 4 methyl-1,3,2-dioxaphosphorinane; 2(4-bromo) phenoxy 4 methyl-1,3,2-dioxaphosphorinane; 2-(4-iodo)phenoxy-4-methyl-1,3,2-dioxaphosphorinane; 2-(2-fiuoro)phenoxy-4,4,6-trimethyl-1,3,2-

dioxaphosphorinane; 2- 2chloro-4-bromo) phenoxy- 4,4,6-

I decyl)phenoxy-4-methyl-l,3,2-dioxaphosphorinane; 2-(2- amyl)phenoxy-4-methyll,3,2 dioxaphosphorinane; 2-(4- butyl)phcnoxy-4-methyl-l,3,2-dioxaphosphorinane; 2-(2- tertiary-butyl)phenoxy 4 methyl-1,3,2-dioxaphosphorinane; 2-(2 secondary-butyl) phenoxy-4-methyl-I ,3,2-dioxaphosphorinane; 2-( Z-nitro) phenoxy4-methylt ,3,2-dioxaphosphorinane; 2-(3 nitro) phenoxy-4,4,6-trimethyl- 1,3,2 dioxaphosphorinane; 2-(4-nitro) phenoxy-4,4,6-trimethyl-l,3,2-dioxaphosphorinane.

The above compounds can be made by reacting equimolecular proportions of the appropriate primary aromatic dichloro phosphite with the appropriate glycol having adjacent hydroxyl groups in the case of the dioxaphospholanes and the appropriate glycol having one carbon atom between the two carbon atoms having the hydroxyl groups attached thereto in the case of the dioxaphosphorinanes in the presence of two mols of a tertiary base such as pyridine or triethylamine as a hydrogen chloride acceptor.

Typical examples of dichloro phosphites which can be used as starting materials in the presentinvention are phenyl dichlorophosphite; 2-chlorophenyl dichlorophosphite; 3-chlorophenyl dichlorophosphite; 4-chlorophenyl dichlorophosphite; 2,3-dichlorophenyl 'dichlorophosphite; 2,4-dichloi'ophenyl dichlorophosphite; 2,5-dichlorophenyl dichlorophosphite; 2,6 dichlorophenyl dichlorophosphite;

3,4-dichlorophenyl dichlorophosphite; 3,5-dichlorophenyl dichlorophosphite; 2-bromophenyl dichlorophosphite; 3- bromophenyl dichlorophosphite; 4-bromophenyl dichlorophosphite; Z-iodophenyl dichlorophosphite; 2-fluorophenyl dichlorophosphite; 2-chloro-4-bromophenyl dichlorophosphite; Z-methylphenyl dichlorophosphite; 3-methylphenyl dichlorophosphite; 4-methy'lphenyl dichlorophosphitc; 3,5- dimethylphenyldichlorophosphite; Z-ethylphcnyl diehlorophosphite; 4-ethylphenyl dichlorophosphite; 2-hexylphenyl dichlorophosphite; 2-cyclohexylphenyl dichlorophosphite; 4-octylphenyl dichlorophosphite; 3-isobutylphenyl dichlorophosphite; Z-dodecylphenyl dichlorophosphite; Z-rnethoxyphenyl dichlorophosphite; 3-methoxyphenyl dichlorophosphite; 4-methoxyphenyl dichlorophosphite; Z-ethoxyphenyl dichlorophosphite; Z-octoxyphenyl dichlorophosphite; 2-amylphenyl dichlorophosphite; 2- butylphcnyl dichlorophosphite; Z-tertiary-butylphenyl di chlorophosphite; 2-secondary-butylphenyl dichlorophosphite; Z-phenoxyphenyl dichlorophosphite; Z-aIpha-naphthoxyphenyl dichlorophosphite; 2-beta-naphthoxyphenyl dichlorophosphite; Z-phenylphenyl dichlorophosphite; alpha-naphthyl dichlorophosphite; beta-naphthyl dichlorophosphite; 2-nitrophenyl dichlorophosphite; 3-nitrophenyl dichlorophosphite; 4-nitrophenyl dichlorophosphite; mphenylene di(dichlorophosphite) and p-phenylene di(dichlorophosphite). Many of the above primary aromatic dichlorophosphites are old compounds and are shown,

for example, in Kosolapofi, Organophosphorus Compounds, on pages 199-200. Those which are new can be prepared by reacting the corersponding phenol with phosphorus trichloride in the manner set forth on page 180 of Kosolapotf, using equivalent amounts of the phenol and phosphorus trichloride.

As the glycol reactants there are employed vicinal glycols, e. g., ethylene glycol; 1,2-propy1ene glycol; 1,2 butylcne glycol; 2,3-butylene glycol; 2,3-dimethyl-2,3- butanediol (pinacol); 1,2-pentanediol, as well as glycols having one carbon atom between the two carbon atoms having the hydroxyl groups attached thereto including 2-methyl-2,4-pentanediol (-hexylene glycol); 1,3-butanediol (1,3-butylene glycol); 2,2-dimethyl-1,3-propanediol (neopentyl glycol); 2-ethyl-1,3-hexanediol; 2,4- pentanediol; Z-methyl-LS-pentanediol; 2,4-heptanedlol; Z-dicthyll,3-propanediol; 2ethyl-2-n-butyl-l,3-propanediol; and 1,3-propanediol.

The preferred method of preparing the compounds of the present invention, however, is by reacting triphenyl phosphite or an appropriately substituted triphenyl phos phite with the appropriate vicinal glycol, e. g., any of the glycols set forth previously.

The above compounds are preferably made by reacting triphenyl phosphite or substituted triphenyl phosphite with the appropriate glycol as above defined. As substituted triphenyl phosphites there can be used, for example, tris(Z-methylphenyl)phosphite; tris(3-methylphenyl)phosphite; tris(4-methylphenyl)phosphite; tris(Z-chloropheny1)phosphite; tris(3-chlorophenyl)phosphite; tris- (4 chlorophenyl)phosphite; tris(2,3 dichlorophenyl)- phosphite; tris(2,4-dichlorophenyl)phosphite; tris(2,5-dichlorophenyl)phosphite; tris(2,6 dichlorophcnyl)phosphite; tris(3,4-dichlorophenyl)phosphite; tris(3,5,-dichlorophenyl)phosphite; tris(Z-bromophenyl)phosphlte; tris- (3 bromophenyl)phosphite; tri(4-bromophenyl)phosphite; tris(4-iodophenyl)phosphite; tri(2-fluorophenyl)- phosphite; tri(2-chloro-4-bromophenyl)phosphite; tris- (3,5-dimethylphenyl)phosphite; tris(2-ethylphenyl)phosphite; phenyl)phosphite; tris(4roctylphenyl)phosphite; tris(3- isobutylphenyl)phosphite; tris(4 dodecylphenyl)phosphite; tris(Z-amylphenyl)phosphite; tris(4butylphenyl)- phosphite; tris(2-tertiary butylphenyl)phosphite; tris(2- secondary butylphenyl)phosphite; tris(2-nitrophenyl)- phosphite; tris(3-nitrophenyl)phosphite; tris(4-nitrophenly)phosphite; tris(2-methoxyphenyl)phosphite; triphenylphenyl phosphite; tris(alpha-naphthyl)phosphite; tris- (beta-naphthyl)phosphite; and tris-1-(2,4-dibromo)naphthyl phosphite. Most of these substituted triphenyl phosphites are old compounds. Those which are new can be formed in conventional fashion by refluxing the appropriate substituted phenol in excess with phosphorus trichloride, e. g., as shown in Kosolapofi, Organophosphorus Compounds (1950), page 183, and Moyle U. S. Patent No. 2,220,845. The preferred compound to use in the present invention is triphenyl phosphite itself.

In order to make the cyclic phosphites of the present invention, it is essential that there be used at least about one mol of the triphenyl phosphite for each mol of the glycol. The excess of the triphenyl phosphite can be as much as 100% or more molar excess, but generally there is no advantage in using more than a 25% molar excess of the phosphite. While it is possible to form the product of the present invention using as little as 0.9 mol of the triphenyl phosphite per mol of the glycol, this is not a preferred practice since the desired product is mixed with other non-cyclic products which are formed when the glycol is used in excess. When a large excess of the glycol is used, e. g., 2 or more mols of the glycol per mol of the triphenyl phosphite, none of the product of the present invention is formed.

The reaction between the glycol and the triphenyl phosphite is generally carried out at a temperature of 50 tris(4-ethylphenyl)phosphite; tris(2-eyclohexyl-' ylammonium hydroxide, etc.

to 184 C. It has been found convenient to employ the temperature at which phenol distills at the pressure employed. The pressure employed can be atmospheric, superatmospheric or subatmospheric. Preferably, it is subatmospheric, e. g., mm. or less.

It is also possible to carry the reaction out at atmospheric pressure, e. g., at 65 C., and then separate the desired glycol ester product from the phenol formed by distillation at reduced pressure, e. g., 1 mm.

While the reaction can be carried out without the aid of a catalyst, it has been found that often the yields are considerably improved by employing an alkaline catalyst which is strong enough to give a pH above 9 and preferably above 10. Typical catalysts are metallic sodium, metallic potassium, sodium hydroxide, potassium hydroxide, sodium phenate, potassium 'phenate, sodium ethylate, potassium alcoholate and other sodium and potassium alcoholates, strong organic bases such as guanidine, quaternary ammonium bases, e. g., tetrameth- Usually between 0.001 and 0.20 mol, preferably about 0.01 to 0.05 mol of alkaline catalyst per mol of glycol is employed.

In place of an alkaline catalyst, it is sometimes desirable to employ a small amount of an acid catalyst, e. g., .001 to 0.2 mol of acid catalyst such as phosphoric acid, for example. Acid catalysts are recommended for use with compounds which are alkali-sensitive, while bases are recommended for compounds which are acidsensitive. Thus, when employing a glycol having a tertiary hydroxy group,.a base catalyst should be used.

The compounds of the present invention have numerous uses. Thus, they are effective plasticizers and stabilizers for vinyl chloride resins and other plastics. The compounds of the present invention can also be reacted with alkyl halides, more specifically alkyl bromides, to open the ring and form 2-bromalkylphenyl alkanephosphonates and 3-bromalkylphenyl alkanephosphonates, which latter compounds are useful as gasoline additives to prevent preignition, afterglow and deposits in the plugs. These haloethylphenyl alkanephosphonates also are useful as insecticides, e. g., they can be used to kill aphids, red spider mites, thrips, etc. As a specific example, 2-bromethylphenyl methanephosphonate can be prepared by mixing one mol of phenylethylene phosphite and 1.1 mols of methyl bromide in a closed vessel together with benzene in an amount equal to the weight of the methyl bromide and phenylethylene phosphite. The mixture was heated to start the exothermic reaction and the temperature then maintained at 110 C. for 60 minutes by the application of external cooling. The benzene and methyl bromide were then stripped off and the 2- bromethylphenyl methanephosphonate recovered in quantitative yields. Further details as to the preparation and use of Z-haloethylphenyl alkanephosphonates are found in Hechenbleikner application Serial No. 622,537, filed November 16, 1956, the entire disclosure of which is hereby incorporated by reference.

The compounds of the present invention can also be used to form other compounds wherein the phenoxy group is replaced by a lower alkoxy group by reaction with the appropriate alcohol. ,For example, 2 phenoxy 1,3,2 dioxaphospholane (phenylethylene phosphite) can be reacted with an alkanol, e. g., methyl or butyl alcohol, in the presence of an alkaline catalyst to form 2 methoxy 1,3,2 dioxaphospholane or 2 butoxy 1,3,2 dioxaphospholane, while if 2 phenoxy 4 methyl 1,3,2- dioxaphosphorinane is employed the products are 2 methoxy 4 methyl 1,3,2 dioxaphosphorinane or 2 butoxy 4 methyl 1,3,2 dioxaphosphorinane. This method of preparing 2 alkoxy 1,3,2 dioxaphospholanes and 2 alkoxy 1,3,2 dioxaphosphorinanes is often simpler and more economical than other methods of preparing these compounds.

It should be noted that the compounds of the present invention all have the phosphorus atom bonded through oxygen directly to a carbon atom of a benzene or substituted benzene ring, i. e., they are derivatives of phenol and not derivatives of aromatic alcohols such as benzyl Similarly, Norris, Principles of Organic Chemistry,.

(1931), page 439, states that the hydroxyl derivatives of the aromatic hydrocarbons may be sharply divided into two classes according to their chemical properties, benzyl alcohol being placed in one class and phenol in the other.

Likewise, Noller, Chemistry of Organic Compounds" (1951), page 488, says:

The phenols are compounds having a hydroxyl group attached directly to an aromatic nucleus. their methods of preparation and reaction 'differ from those of the alcohols.

On page 510 Noller points out that the aromatic alcohols, e. g., benzyl alcohol, are prepared by the same methods as the aliphatic alcohols and that they have generally the same reactions as the aliphatic alcohols.

The Van Nostrand Chemists Dictionary (1953) under alcohol on page 17, states:

The alkyl residue of the alcohol may be further substituted by aromatic nuclei, as in benzyl alcohol,

" thus forming thev alcoholic derivatives of the carbocyclic series, but the alcoholic hydroxyl may not be directly united to a carbon atom which is a member of the arematic ring. because in that case the compound is considered a phenol, which has certain distinctive properties."

The Encyclopedia of Chemistry (1957), edited by George L. Clark, on page 102, states:

Phenols are not similar to alcohols in properties. An example of an aromatic alcohol is benzyl alcohol (C H CH OH).

This book on page 29 uses benzyl alcohol as an illustration of an aromatic alcohol.

The differences between the phenols and the aromatic alcohols carry over to their derivatives, as will be apparent in comparing compounds included in the present invention and having the formula:

with compounds outside the present invention and having the formula:

Type II In general 7 alkylphenyl alkanephosphonates, whereas compounds of Type II when reacted with the alkyl or aralkyl halide merely form. a cyclic phosphonate without ring opening or} addition of the halogen atom and with simultaneous elimination of the benzyl group as benzyl halide.

Also, upon reaction with hydrogen halides compounds of type I ring open with addition of the halogen to the compound in a manner similar to that when alkyl halides are employed. The phenoxy group is not attacked. Compounds of type II are hydrolyzed by hydrogen halides and benzyl alcohol is formed in the hydrolysis while halogen is not added to the compound.

Compounds of type I undergo ester interchange with aliphatic alcohols having lower boiling points than phenol, e. g., methyl and butyl alcohols, whereas compounds of type II will not undergo ester interchange with aliphatic alcohols having lower boiling points than benzyl alcohol.

Upon reaction with an acyl halide, compounds of type I will not 'split off phenyl halide (halobenzene) whereas in this reaction compounds of type 11 split oil? benzyl halide.

Compounds of type I are also more stable to oxidation than compounds of type II.

These differences all emphasize the difference between the bond of an oxygen atom directly to an aromatic ring carbon atom as in the phenoxy grouping present in the compounds of the present invention and the bond of an oxygen atom to an aliphatic carbon atom as in the benzyloxy grouping.

The differences between type I and type II compounds are further illustrated in reactions I to V below in which phenylethylene phosphite is compared with benzylethylene phosphite.

PHENYLETHYLENE PHOSPHITE AS OPPOSED TO BENZYLETHYLENE PHOSPHITE I. Reaction with methyl bromide A. BENZYLETHYLENE PHOSPHITE I c11 0 0 room -r CHJBT i trlh+ecmnr OHIO onto

Reagents:

Mols Benzylethylene phosphite 1 Methyl bromide 2 The reagents were mixed and heated in an autoclave to an initial temperature of 100 C. The reaction was exothermic, and the mixture was cooled to keep the temperature below 150 C. The mixture was then distilled at reduced pressure, and 0.9 mol of benzyl bromide distilled at 65 C./l0 mm., and 0.9 mol of ethylene methanephosphonate distilled at 75 C./ 10 mm.

B. PHENYLETHYLENE PHOSPHITE AND BROMIDE METHYL CH:() H

P 4 0 x131 ClIiO P CHzC lI 'Br onto e 00 98% yield of Z-bromoethylphenyl methanephosphonate was obtained when the benzylethylene phosphite was replaced by phenylethylene phosphite.

Hydrogen chloride 1 The phosphite was cooled to 20 C., and hydrogen chloride gas was passed into the solution until the theoretical amount had been adsorbed. The mixture was heated to 100 C. in an autoclave. On distillation of the reaction products, the following products were obtained:

Benzyl chloride 0.85 mol, B. P. 60 C./l5 mm. Ethylene phosphite s 0.75 mol, B. P. 100 C./2 mm.,

B. I'IIENYLETHYLEN E PHOSPHI'IE (,1 un IiI POoi-l-HC] v OFOCH2CH2Cl CH O Reagents:

Mol lhcnylethylene phosphite 1 Hydrogen chloride l The reaction conditions were the same as for the henzylethylene phosphite reaction. After the correct amount of HCl adsorption, the mixture was heated to 100 C. in an autoclave. The product was then distilled at l.5

C.) for 15 minutes, and then the mixture was distilled at reduced pressure. After stripping the solvent, 0.93 mol of ethylene phosphite distilled 100 C./2 mm., and 0.90 mol 0,0-diethyl-S-benzyl phosphorodithioate distilled at C./2 mm.

B. PHENYLETHYLENE PHOSPHITE CHIC POqS (CIH50)2PSH O i OCH:C-H2S1 (OCzH5); c1110 Reagents:

Phenylethylene phosphite ..mol 1 0,0-diethyl dithiophosphoric acid do 1 Toluene (solvent) ml.... 150

The reagents were mixed and heated under reflux for 15 minutes. The toluene was stripped, and the mixture heated to C. at [.1 mm. without any distillation occurring. The product was 0,0-diethyl-S-ethylenephenyl hydrogen phosphonate phosphorodithioate of the indicated formula.

IV. Equilibrium reaction (EH10 CH2O PO+CH1OH r: P0cnl+aon OHRO CHZO Reagents:

Phenylethylene phosphite mol 1 Benzyl alcohol do 1 Sodium g 0.5

The reagents were mixed and heated to 100 C. and allowed to react until an equilibrium was reached. After cooling, the mixture was washed with 10% sodium hy-.

droxide at 5 to -10 C. The organic layer, upon aasagrce distillation, yielded 0.86 mol of benzylethylene phosphite.

Since this reaction was under equilibrium conditions, it follows that when one mol of benzylethylene phosphite is reacted with one mol of phenol, the same results are obtained, i. e., the product contains 0.86 mol of benzylethylene phosphite.

V. Relative rates of hydrolysis under identical conditions where R R R and R are the same or different and are hydrogen or lower alkyl and R designates the groups attached to the phenylene nucleus and is hydrogen or one or more halogen, alkyl, nitro, alkoxy, aryloxy, aryl or cycloalkyl groups.

These compounds having two heterocyclic rings are made in the same manner as the compounds having a single heterocyclic ring except that it is necessary to use four mols of the glycol and four mols of the tertiary amine for each mol of the dichlorophenylene diphosphite.

EXAMPLE 1 One mol of ethylene glycol was mixed with two mols of pyridine in one liter of diethyl ether at room temperature and there was gradually added over a period of about '6 hour one mol of phenyl dichlorophosphite. When the addition was complete, the pyridine hydrochloride formed was filtered oil and the solvent stripped off at atmospheric pressure. The residue 'was distilled at reduced pressure (about 0.5 mm.) and ethylenephenyl phosphite was obtained in a yield of about 85% of the theoretical. The ethylenephenyl phosphite was a colorless liquid and had a B. P. of 75 C. at 0.5 mm., N 1.53105; (1 1.230.

EXAMPLE 2 Example 1 was repeated using propylene glycol in place of ethylene glycol. The product obtained was propylene. phenyl phosphite having the formula col, 4 mols of pyridine and one mol of p-phenylene di(dichlorophosphite) H: C O

The product obtained had the formula OCH2 10 EXAMPLE 4 I, Example 3 was repeated replacing the p-phenylene di(dichlorophosphite) with m-phenylene di(dichlorophosphite) and the product obtained was 0 o-oH, 1 0 OP\ l o- H l H: -O

EXAMPLE 5 One mol of ethylene glycol was mixed with one mol of triphenyl phosphite in the presence of 0.17 mol of sodium. 1

The mixture was heated to 130 C. at atmospheric pressure and then the phenol was distilled off under water vacuum pump pressure. After all of the phenol was collected, the water vacuum pump was replaced by a high vacuum pump and the distillation continued at about 0.5 mm. and the ethylenephenyl phosphite collected at a temperature of C. in a yield approaching theoretical.

EXAMPLE 6 Example 5 was repeated omitting the sodium. The

ethylenephenyl phosphite obtained was recovered and had a B. P. of 75 C. at 0.5 mm.

EXAMPLE 7 Example 5 was repeated using 1.25 mols of triphenyl phosphite in place of one mol of material. The re sults obtained were substantially the same. The excess triphenyl phosphite was available as a heel for the next run.

EXAMPLE 8 Grams 2-methyl-2,4-pentanediol (hexylene glycol) (1 mol) 118 Triphenyl phosphite (1.2 mols) 372 Metallic sodium (0.17 mol) 4 The sodium was added to the hexylene glycol and heated to 95 C. to dissolve the sodium. The mixture was cooled to room temperature and then the triphenyl phosphite added. A slightly exothermic reaction was noted. The

was obtained in a yield of based on the amount of starting glycol during the vacuum distillation. This compound is a liquid having aboiling point of C. at 1 mm., n 1.51245 and d 1.0934.

EXAMPLE 9 Example 8 was repeated using just one mol of triphenyl phosphite per mol of glycol. The 2-phenoxy-4,4,6- trimethyl-1,3,2-dioxaphosphorinane was obtained in good yields.

EXAMPLE 10 Example 8 was repeated but the high vacuum distillation was stopped when the head temperature reached 95 C. The residue was cooled to room temperature, 1% Hyflo (diatomaceous earth) was added and the mix- 11 ture filtered to recover the cyclic product in purified form.

EXAMPLE 11 1,3-butanediol (l,3-butylene glycol) mol 1 Triphenyl phosphite do 1 Sodium gram 1 obtained was71% of theoretical based on the glycol used. The product obtained had a n 1.515130 and EXAMPLE 12 Mol 2,2-dirnethyl-1,3-propanediol (neopentyl glycol) 1 Triphenyl phosphite l The reagents were mixed and the phenol was stripped as in Example 11. Then the product was recovered by distillation at 90-95 C. at 1 mm. in a yield of 6 ounces (about30% based on the glycol used).

The product was 2-phenoxy-5,5-dimethyl-l,3,2-dioxaphosphorinane having the formula cHr-o-om P-0 Hzo and having a r2 of 1.50375.

' EXAMPLE 13 Example 12 was repeated but adding one gram of sodium in the same manner as in Example ll. The yields of the desired cyclic phosphite were much improved over those obtained in Example 12.

EXAMPLE 14 Ethylene glycol mol 1 Tris(2-chlorophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and ethylene- 2-chlorophenyl phosphite recovered as the final product.

EXAMPLE l Ethylene glycol moL- 1 Tris(3-chlorophenyl) phosphite do- 1 Sodium g am" 1 The process of Example 11 was repeated and ethylene- 3-chlorophenyl phosphite recovered as the final product.

EXAMPLE 16 Ethylene glycol mol 1 Tris(4-chlorophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and ethylene- 4-chlorophenyl phosphite recovered as the final product.

EXAMPLE 17 Ethylene glycol mol.... 1 Tris(2,3-dichloropheny1) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and ethylene- 2,3-dichlorophenyl phosphite recovered as the final product.

12 EXAMPLE 18 v Ethylene glycol mol 1 Tris(2,4-dichlorophenyl) phosphite do 1 Sodium ..gram 1 The process of Example 11 was repeated and ethylene- 2,4-dichlorophenyl phosphite recovered as the final product.

EXAMPLE l9 Ethylene glycol m0] 1 Tris(2,5-dichlorophenyl) phosphite do 1 Sodium gram.. 1

The process of Example 11 was repeated and ethylene- 2,5-dichlorophenyl phosphite recovered as the final product.

EXAMPLE 20 Ethylene glycol mol 1 Tris(2,6-dichlorophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and ethylene- 2,6-dichlorophenyl phosphite recovered as the final product.

v EXAMPLE 21 Ethylene glycol mol l Tris(3,4-'dichlorophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and ethylene- 3,4-dichlorophenyl phosphite recovered as the final product.

EXAMPLE 22 Ethylene glycol mol 1 Tris(3,5-dichlorophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and ethylene- 3,5-dichlorophenyl phosphite recovered as the final product.

EXAMPL 23 Ethylene glycol mol l Tris(2-bromophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and ethylene- 2-bromophenyl phosphite recovered as the final product.

EXAMPLE 24 Ethylene glycol ;mol 1 Tris(3-bromophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and ethylene- 3-bromophenyl phosphite recovered as the final product.

EXAMPLE 25 Ethylene glycol mol 1 Tris(4-bromophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and ethylene- 4-bromophenyl phosphite recovered as the final product.

EXAMPLE 26 Ethylene glycol mol 1 Tris(4-iodophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and ethylene.

4-iodophenyl phosphite recovered as the final product.

EXAMPLE 27 Ethylene glycol mol 1 Tris(3-fluorophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and ethylene- 3-fiuoropheny1 phosphite recovered as the final product.

EXAMPLE 28 Ethylene glycolmol 1 Tris( 2-chloro-4-bromophenyl) phosphite do 1 Sodium gram. 1

The process of Example 11 was repeated and ethylene- 2-chloro-4-bromophenyl phosphite recovered as the final product.

The process of Example 11 was repeated and ethylene- Z-methylphenyl phosphite recovered in 87% yield as the final product.

EXAMPLE 30 Ethylene glycol mol.. l Tris(3-methylphenyl) phosphite do 1 H PO (100%) gram 1 The process of Example 11 was repeated and ethylene- 3-rnethylphenyl phosphite recovered as the final product. EXAMPLE 31 M01 Ethylene glycol l Tris(3,5-dimethylphenyl) phosphite 1 The process of Example 11 was repeated and ethylene- 3,5-dimethylphenyl phosphite recovered as the final prod- Ct.

EXAMPLE 32 M01 Ethylene glycol 1 Tris(4-methylphenyl) phosphite l The process of Example ll was repeated and ethylene- 4-methylphenyl phosphite recovered as the final product. EXAMPLE 33 Ethylene glycol mol l Tris(2-ethylphenyl) phosphite do 1 H PO (100%) gram 1 The proces of Example 11 was repeated and ethylene- Z-ethylphenyl phosphite recovered as the final product.

EXAMPLE 34 M01 Ethylene glycol l Tris(4-ethylphenyl) phosphite 1 The process of Example 11 was repeated and ethylene- 4-ethylphenyl phosphite recovered as the final product.

EXAM LE 35 Ethylene glycol mol 1 Tris(2-hexylphenyl) phosphite do 1 H3PO4 gram 1 The process of Example 11 was repeated and ethylene- 2-hexylphenyl phosphite recovered as the final product.

EXAMPLE 36 Ethylene glycol mol 1 Tris(2-cyclohexylphenyl) phosphite do 1 H PO (100%) gram 1 The process of Example 11 was repeated and ethylene- Z-cyclohexylpher ryl phosphite recovered as the final product.

I EXAMPLE 37 Ethylene glycol mol 1 Tris(4-octylphenyl) phosphite do 1 H PO (100%) gram 1 The process of Example 11 was repeated and ethylene- 4-octylphenyl phosphite recovered as the final product.

14 EXAMPLE 38 Mel Ethylene glycol l Tris(3-isohutylphenyl) phosphite 1 The process of Example 11 was repeated and ethylene- 3-isobutylphenyl phosphite recovered as the final product.

EXAMPLE 39 Ethylene glycol mnl 1 Tris(2-dodecylphenyl) phosphite do 1 H PO gram 1 The process of Example 11 was repeated and ethylene- 2-dodecylpheuyl phosphite recovered as the final product. EXAMPLE 40 Ethylene glycol mol 1 Tris(2-methoxyphenyl) phosphite do 1 Sodium g am 1 The process of Example 11 was repeated and ethylene- Z-methoxyphenyl phosphite recovered as the final product.

EXAMPLE 41 Ethylene glyc v mnl 1 Tris(3-methoxyphenyl) phosphite ..-do 1 Sodium gram 1 The process of Example 11 was repeated and ethylene- B-methoxyphenyl phosphite recovered as the final product.

EXAMPLE 42 Ethylene glycol mnl l Tris(4-methoxypheny1) phosphite ..do.. 1 Sodium g am- 1 The process of Example 11 was repeated and ethylene- The process of Example 11 was repeated and ethylene- Z-ethoxyphenyl phosphite recovered as the final product.

EXAMPLE 44 Ethyleneglycol mol-.. l Tris(2-octoxyphenyl) phosphite -do.. 1 Sodium gram 1 The process of Example 11 was repeated and ethylene 2-octoxyphenyl phosphite recovered as the final product.

EXAMPLE 45 Ethylene glycolma] 1 Tris(2-amylphenyl) phosphite ....do 1 Sodium gram 1 The process of Example 11 was repeated and ethylene 2-amylphenyl phosphite recovered as the final product.

EXAMPLE 46 Ethylene glycol mnl 1 Tris(2-butylphe'nyl) phosphite do 1 Sodium g am 1 The process of Example 11 was repeated and ethylene- 2-butylphenyl phosphite recovered as the final product.

EXAMPLE 47 Ethylene glycol mo! l Tris(Z-tertiary-butylphenyl) phosphite do 1 Sodium g am" 1 The process of Example 11 was repeated and ethylene- Z-tertiary-butylphenyl phosphite recovered as the final product.

EXAMPLE 48 Ethylene glycol nl 1 Tris(Z-secondary-butylphenyl) phosphite do; 1 Sodium g am" 1 The process of Example 11 was repeated and ethylene- Z-secondary-butylphenyl phosphite recovered as the final product. 1

Z-B-naphthoxyphenyl phosphite recovered as the final product.

EXAMPLE 52 Ethylene gly moL- l Tris(2-phenylphenyl) phosphite........s ;do 1 Sodium g am" 1 The process of Example 11 was repeated and ethylene- 2-phenylphenyl phosphite recovered as the final product.

EXAMPLE 53 Ethylene glycol 11101 1 Tris(2-nitrophenyl) phosphite do 1 Sodium gram" 1 The process of Example 11 was repeated and ethylene- Z-nitrophenyl phosphite recovered as the final product.

EXAMPLE 54 Ethylene glycolmnl 1 Tris(3-nitrophenyl) phosphite do.. 1 Sodium g am" 1 The process of Example 11 was repeated and ethylene- 3-nitrophenyl phosphite recovered as the final product.

EXAMPLE 55 Ethylene glycol ma] 1 Tris(4-nitrophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and ethylene- 4-nitrophenyl phosphite recovered as the final product.

EXAMPLE 56 2,3-butylene glycol mol 1 Triphenyl phosphite do 1 Sodium gram-.. 1

The process of Example 11 was repeated and 1,2 -dimethylethylenephenyl phosphite recovered as the final product.

EXAMPLE 57 l,2-propylene glycol mol 1 Tris(2-chlorophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and l-methylethylene-Z-chlorophenyl phosphite recovered as the final product.

EXAMPLE $8 1,2-butylene glycol mnl 1 Triphenyl phosphite do *1 Sodium gram 1 The process of Example 11 was repeated and l-ethylethylenephenyl phosphite recovered as the final product.

EXAMPLE 59 l,2-pentanediol mo] 1" Triphenyl phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and l-propylethylenephenyl phosphite recovered as the final product.

EXAMPLE 60 Trimethylene glycol (1,3-propanediol) mol.... 1 Triphenyl phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and 2-phenoxy- 1,3,2-dioxaphosphorinane recovered as the final product.

EXAMPLE 61 2-ethyl-1,3-hexanediol mol 1 Triphenyl phosphite do 1 Sodium 'g am 1 The process of Example ll was repeated and 2-phenoxy-4-propyl-S-ethyl-1,3,2-dioxaphosphorinane was recovered as the final product.

. The process of Example 11 was repeated and 2-phenoxy-4,6-dimethyl-l,3,2-dioxaphosphorinane recovered as the final product.

EXAMPLE 63 2-ethyl-1,3-butanediol ol 1 Triphenyl phosphite ....do 1 Sodium g am 1 The process of Example 11 was repeated and 2-phenoxy-4-ethyl-5-methyl-1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 64 2,4-heptanediol rnnl 1 Triphenyl phosphite .do 1 Sodium gram 1 The process of Example 11 was repeated and 2-phenoxy-4-propyl-6-methyl-1,3,2 dioxaphosphonnane recovered as the final product.

EXAMPLE 65 2,2-diethyl-1,3-propanediol mol 1 Triphenyl phosphite do 1 Sodium g am" 1 The process of Example 11 was repeated and Z-phenoxy-5,5-diethyl-l,3,2-dioxaphosphorinane recovered as the final product.

EXAMPLE 66 2-ethyl-2-butyl-1,3-propanediol mol.. 1 Triphenyl phosphite do 1 Sodium g am 1 The process of Example 11 was repeated and 2-phenoxy-S-ethyl-S-butyl-1,3,2 dioxaphosphorinane recovered as the final product.

17 EXAMPLE 67 1,3-hexanediol mnl 1 Triphenylphosphite do 1 Sodium gram-.. 1

The process of Example 11 was repeated and 2-phenoxy-4-propyl-1,3,2-dioxaphosphorinane recovered as the final product.

1' EXAMPLE 68 2-methyl-2,4-pentanediol mol 1 Tris(2-chlorophenyl) phosphite d 1 Sodium gram 1 The process of Example 11 was repeated and 2-(2- chloro)phenoxy-4,4,6-trimethyl-l,3,2-dioxaphosphorinane recovered as the final product.

EXAMPLE 69 2,2-dimethyl-1,3-propanediol mol 1 Tris(3-chlorophenyl) phosphite do 1 Sodium -gram 1 The process of Example 11 was repeated and 2-(3- chloro)phenoxy-5,5-dimethyl 1,3,2 dioxaphosphorinane recovered as the final product.

. EXAMPLE 70 1,3-butylene glycol IIlOl..... l Tris(4-c hlorophenyl) phosphite do 1 Sodium "gram" 1 The process of Example 11 was repeated and 2-(4- chloro)phenoXy-4-methyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 71 1,3-butylene glycol mol- 1 Tris(2,3-dichlorophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and 2-(2,3- dichloro)phenoxy 4 methyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 72 1,3-butylene glycol mol 1 Tris(2,4-dichl0rophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and 2(2,4-dichloro)phenoxy 4 methyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 73 1,3-butylene glycol mnl 1 Tris(2,5-dichlorophenyl) phosphite ..do 1 Sodium gram 1 The process of Example 11 was repeated and 2-(2,5-dichloro)phenoxy 4 methyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 74 2-methyl-2,4-pentanediol mol.. l Tris(2,6-dich1orophenyl) phosphite do 1 Sodium gram" 1 The process of Example 11 was repeated and 2-(2,6-dich1oro)phenoxy 4,4,6 trimethyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 75 Zmethyl-ZA-pentanediol ..mol 1 Tris(3,4-dichlorophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and 2-(3,4-dichloro)phenoxy 4,4,6 trimethyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 76 2-methyl-2,4-pentanediol mol 1 Tris(3,5-dichlorophenyl) phosphite do 1 Sodium gram 1 18 The process of Example 11- was repeated and 2-(3,5-dichloro)phenoxy 4,4,6 trimethyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 77 2-methyl-2,4-pentanediol mol.. 1 Tris(2-bromophenyl) phosphite ...do.. 1

Sodium g am... 1.

The process of Example 11 was repeated and 2-(2- bromo)phenoxy 4,4,6 trimethyl 1,3,2 dioxaphosphorinane recovered as the final product.

mo)phenoxy 4 methyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 79 1,3-butylene glycol mnl 1 Tris(4-bromophenyl) phosphite do 1 Sodium g am 1 The process of Example. 11 was repeated and 2-(4-bromo)phenoxy 4 methyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 80 1,3-butylene glycol mnl 1 Tris(4-iodophenyl) phosphite -do 1 Sodium g am-- 1 The process of Example 11 was repeated and 2-(4- iodo)phenoxy 4 methyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 81 2-methyl-2,4-pentanediol mol.. l Tris(2-fluorophenyl) phosphite do 1 Sodium g am" 1 The process of Example 11 was repeated and 2-(4- fiuoro)phenoxy 4,4,6 trimethyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 82 2-methyl-2,4-pentanediol mol.... 1 Tris(2-chloro-4-bromophenyl) phosphite ....do 1

Sodium g am" 1 The process of Example 11 was repeated and 2-(2- chloro 4 bromo)phenoxy 4,4,6 trimethyl 1,3,2=- dioxaphosphorinane recovered as the final product.

EXAMPLE 83 2-methyl-2,4-pentanediol mol.. l Tris(2-methylphenyl) phosphite .do 1

Sodium gram... 1

The process of Example 11 was repeated and 2(2- methy1)phenoxy 4,4,6 trimethyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 84 1,3-butylene glycol Q. mol 1 Tris(3-methylphenyl) phosphite do 1 Sodium gram-.. 1

The process of Example 11 was repeated and 2-(3- methyl) phenoxy 4 methyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 85 2-methyl-2,4-pentanediol ....mol.. 1

Tris(4-methylphenyl) phosphite do 1 Sodium A g am 1 EXAMPLE 86 2-methyl-2,4-pentanediol -Q mol 1 Tris(3,S-dimethylphenyl) phosphite do.. 1 Sodium gram 1 The process of Example II was repeated and 2-(3,5- dimethyDphenoxy 4,4,6 trimethyl 1,3, 2 dioxaphosphorinane recovered as the final product.

EXAMPLE 87 1,3-butylene glycol mnl 1 Tris(2-ethylphenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and 2-(2- ethyl)phenoxy 4 methyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 88 1,3-butylene glycolmoll Tris(4-et.hylphenyl) phosphite ....do 1 Sodium gram 1 The process of Example 11 was repeated and 2-(4- ethyl)phenoxy 4 methyl 1,3,2 dioxaphosphorinane recovered as the final product.

- EXAMPLE 89 2-methyl-2,4-pentanediol mol 1 Tris(2-hexylphenyl) phcmphite do 1 Sodium gram 1 The process of Example 11 was repeated and 2-(2- hexyl)phenoxy 4,4,6 trimethyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 90 1,3-butylene glycol mol l Tris(2-cyclohexylphenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and 2-(2- cyclohexyl)phenoxy 4 methyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 91 2-methyl-2,4-pentanediol mol l Tris(4-octylphenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and 2-(4- octyDphenoXy 4,4,6 trimethyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 92 1,3-hutylene glycol mol 1 Tris(3-isobutylphenyl) phosphite do 1 Sodium ....gram 1 The process of Example 11 was repeated and 2-(3-isobutyl)phenoxy-4-methyl-1,3,2-dioxaphosphorinane recovered as the final product.

EXAMPLE 93 1,3-butylene glycol mnl 1 Tris(4-dodecylphenyl) phosphite do.. 1 Sodium gram 1 The process of Example 11 was repeated and 2-(4- dodecyl)phenoxy-4-methyl-1,3,2-dioxaphosphorinane recovered as the final product.

EXAMPLE 94 1,3-butylene glycol mol 1 Tris(2-amylpheny1) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and 2-(2- amyl phenoXy-4-methyl-1,3,2-dioxaphosphorinane recovered as the final product.

EXAMPLE 95 1,3-butylene glycol mol l Tris(4-butylphenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and 2-(4- butyl)phenoXy-4-methyl-1,3,2-dioxaphosphorinane recovered as the final product.

EXAMPLE 96 1,3-butylene glycol mol l Tris(2-tertiary butylphenyl) phosphite do 1 Sodium ..gram... 1

The process of Example 11 was repeated and 2-(2-tertiary butyl)phenoXy-4-methyl-1,3,2-dioxaphosphorinane recovered as the final product.

EXAMPLE 97 1,3-butylene glycol mol l Tris(Z-secondary-butylphenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and 2-(2- secondary butyl)phenoxy 4 methyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 98 1,3-butylene glycol". mol 1 Tris(2-nitrophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and 2-(2- nitro)phenoxy-4-methyl 1,3,2-dioxaphosphorinane recovered as the final product.

EXAMPLE 99 2-methyl-2,4-pentanediol mol l Tris(3-nitrophenyl) phosphite do 1 Sodium gram 1 The process of Example 11 was repeated and 2- (3-nitro)phenoxy 4,4,6 trimethyl 1,3,2 dioxaphosphorinane recovered as the final product.

EXAMPLE 100 2-methyl-2,4-pentanedi0l mol l Tris(4nitrophenyl) phosphite .do. 1 Sodium gram 1 The process of Example 11 was repeated and 2- (4-nitro)phenoxy 4,4,6 trimethyl 1,3,2 dioxaphosphorinane recovered as the final product.

The above specific examples are merely illustrative and are not exhaustive as to the preparation of compounds coming within the instant invention.

We claim: 1. Cyclic phosphites having the formula:

R1 RzC-O\ (Ra- I -a.). P o- Err-(l1 O 21 4. Compounds according to claim 1 wherein R is hydrogen.

5. CHa(3HCHrCH1 I l3. 2-phenoxy-1,3,2-dioxaphospholane having as the sole substituents on the dioxaphospholane ring not more than one lower alkyl group attached to each of the carbon atoms of the dioxaphospholane ring and having attached to the phenoxy group a lower alkyl group.

14. Z-phenoxy-l,3,2-dioxaphosphorinane having up to three lower alkyl groups attached to carbon atoms of the dioxaphosphorinane ring and having attached to the phenoxy group a lower alkyl group.

15. A process of preparing a cyclic phosphite having the formula:

where R R R R R and R are selected from the group consisting of hydrogen and lower alkyl groups,

R7 is selected from the group consisting of hydrogen, halo, nitro, lower alkyl, lower alkoxy, cyclohexyl, phenoxy, naphthoxy and phenyl and n is an integer of the group consisting of 0 and 1 comprising reacting 1 mol of a glycol having the formula:

22 v with at least about I mol of a phosphite having the formula:

16. A process according to claim 15 wherein the reaction is carried out with the aid of an alkaline catalyst having a pH above 9. 3

17. A process according to claim 15 wherein R is hydrogen.

18. A process according to claim 17 wherein the reaction is carried out in the presence of an alkaline cata-= lyst having a pH above 9. v

19. A process according to claim 15 wherein R is hydrogen and between 1 and 1.5 mol of the phosphite are employed per mol of glycol.

20. A process of preparing the cyclic phosphite comprising heating 1 mol of neopentyl glycol with at least about 1 mol of triphenyl phosphite in the presence of an alkaline catalyst having a pH above 9.

22. A process of preparing the cyclic phosphite comprising heating 1 mol of Z-methyI-ZA-pentanediol with at least about 1 mol of triphenyl phosphite in the presence of an alkaline catalyst having a pH above 9.

23. A process of preparing phenylethylene phosphite comprising heating 1 mol of ethylene glycol with at least about 1 mol of triphenyl phosphite in the presence of an alkaline catalyst having a pH above 9.

24. A process of preparing a 2-phenoxyl.,3,2-dioxa phospholane comprising reacting 1 mol of a vicinal glycol having not more than one lower alkyl group attached to each hydroxyl group containing carbon atom with at least about 1 mol of triphenyl phosphite.

25. A process of preparing a 2-phenoxy-l,3,2-dioxaphophorinane comprising reacting 1 mol of a glycol having one carbon atom between the carbon atoms attached to the hydroxyl groups, said glycol having up to 3 lower alkyl groups, with at least about 1 mol of triphenyl phosphite.

No references cited.

Disclaimer 2,834,798.Ingenuin Heohenbleikner, Clarksburg, Carl William Pause,

Adams, and Francis 0. La-noue, North Adams, Mass. HETEROGYCLIO PHOSPHORUS COMPOUNDS. Patent dated May 13, 1958. Disclaimer filed Nov. 29, 1963, by the assignee, H ookor Okemioal Corporation.

Hereby enters this disclaimer toolaim 6 of said patent [Oyfim'al Gazette February 11, 1964.] 

1. CYCLIC PHOSPHITES HAVING FORMULA:
 15. A PROCESS OF PREPARING A CYCLIC PHOSPHITE HAVING THE FORMULA: 